Meaning of Napier's bones | Babel Free
Definitions
A set of numbered rods used for multiplication and division (see the Wikipedia article for a fuller explanation).
plural, plural-only
Equivalents
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.